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263 lines
7.8 KiB
Python
263 lines
7.8 KiB
Python
# JavaScript template for HTMLWriter
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JS_INCLUDE = """
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<link rel="stylesheet"
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href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
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<script language="javascript">
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function isInternetExplorer() {
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ua = navigator.userAgent;
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/* MSIE used to detect old browsers and Trident used to newer ones*/
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return ua.indexOf("MSIE ") > -1 || ua.indexOf("Trident/") > -1;
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}
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/* Define the Animation class */
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function Animation(frames, img_id, slider_id, interval, loop_select_id){
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this.img_id = img_id;
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this.slider_id = slider_id;
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this.loop_select_id = loop_select_id;
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this.interval = interval;
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this.current_frame = 0;
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this.direction = 0;
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this.timer = null;
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this.frames = new Array(frames.length);
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for (var i=0; i<frames.length; i++)
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{
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this.frames[i] = new Image();
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this.frames[i].src = frames[i];
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}
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var slider = document.getElementById(this.slider_id);
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slider.max = this.frames.length - 1;
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if (isInternetExplorer()) {
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// switch from oninput to onchange because IE <= 11 does not conform
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// with W3C specification. It ignores oninput and onchange behaves
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// like oninput. In contrast, Microsoft Edge behaves correctly.
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slider.setAttribute('onchange', slider.getAttribute('oninput'));
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slider.setAttribute('oninput', null);
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}
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this.set_frame(this.current_frame);
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}
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Animation.prototype.get_loop_state = function(){
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var button_group = document[this.loop_select_id].state;
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for (var i = 0; i < button_group.length; i++) {
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var button = button_group[i];
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if (button.checked) {
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return button.value;
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}
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}
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return undefined;
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}
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Animation.prototype.set_frame = function(frame){
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this.current_frame = frame;
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document.getElementById(this.img_id).src =
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this.frames[this.current_frame].src;
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document.getElementById(this.slider_id).value = this.current_frame;
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}
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Animation.prototype.next_frame = function()
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{
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this.set_frame(Math.min(this.frames.length - 1, this.current_frame + 1));
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}
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Animation.prototype.previous_frame = function()
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{
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this.set_frame(Math.max(0, this.current_frame - 1));
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}
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Animation.prototype.first_frame = function()
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{
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this.set_frame(0);
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}
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Animation.prototype.last_frame = function()
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{
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this.set_frame(this.frames.length - 1);
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}
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Animation.prototype.slower = function()
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{
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this.interval /= 0.7;
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if(this.direction > 0){this.play_animation();}
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else if(this.direction < 0){this.reverse_animation();}
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}
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Animation.prototype.faster = function()
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{
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this.interval *= 0.7;
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if(this.direction > 0){this.play_animation();}
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else if(this.direction < 0){this.reverse_animation();}
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}
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Animation.prototype.anim_step_forward = function()
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{
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this.current_frame += 1;
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if(this.current_frame < this.frames.length){
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this.set_frame(this.current_frame);
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}else{
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var loop_state = this.get_loop_state();
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if(loop_state == "loop"){
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this.first_frame();
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}else if(loop_state == "reflect"){
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this.last_frame();
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this.reverse_animation();
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}else{
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this.pause_animation();
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this.last_frame();
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}
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}
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}
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Animation.prototype.anim_step_reverse = function()
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{
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this.current_frame -= 1;
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if(this.current_frame >= 0){
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this.set_frame(this.current_frame);
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}else{
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var loop_state = this.get_loop_state();
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if(loop_state == "loop"){
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this.last_frame();
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}else if(loop_state == "reflect"){
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this.first_frame();
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this.play_animation();
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}else{
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this.pause_animation();
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this.first_frame();
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}
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}
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}
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Animation.prototype.pause_animation = function()
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{
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this.direction = 0;
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if (this.timer){
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clearInterval(this.timer);
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this.timer = null;
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}
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}
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Animation.prototype.play_animation = function()
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{
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this.pause_animation();
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this.direction = 1;
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var t = this;
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if (!this.timer) this.timer = setInterval(function() {
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t.anim_step_forward();
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}, this.interval);
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}
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Animation.prototype.reverse_animation = function()
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{
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this.pause_animation();
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this.direction = -1;
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var t = this;
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if (!this.timer) this.timer = setInterval(function() {
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t.anim_step_reverse();
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}, this.interval);
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}
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</script>
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"""
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# Style definitions for the HTML template
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STYLE_INCLUDE = """
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<style>
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.animation {
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display: inline-block;
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text-align: center;
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}
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input[type=range].anim-slider {
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width: 374px;
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margin-left: auto;
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margin-right: auto;
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}
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.anim-buttons {
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margin: 8px 0px;
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}
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.anim-buttons button {
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padding: 0;
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width: 36px;
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}
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.anim-state label {
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margin-right: 8px;
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}
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.anim-state input {
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margin: 0;
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vertical-align: middle;
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}
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</style>
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"""
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# HTML template for HTMLWriter
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DISPLAY_TEMPLATE = """
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<div class="animation">
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<img id="_anim_img{id}">
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<div class="anim-controls">
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<input id="_anim_slider{id}" type="range" class="anim-slider"
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name="points" min="0" max="1" step="1" value="0"
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oninput="anim{id}.set_frame(parseInt(this.value));">
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<div class="anim-buttons">
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<button title="Decrease speed" aria-label="Decrease speed" onclick="anim{id}.slower()">
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<i class="fa fa-minus"></i></button>
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<button title="First frame" aria-label="First frame" onclick="anim{id}.first_frame()">
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<i class="fa fa-fast-backward"></i></button>
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<button title="Previous frame" aria-label="Previous frame" onclick="anim{id}.previous_frame()">
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<i class="fa fa-step-backward"></i></button>
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<button title="Play backwards" aria-label="Play backwards" onclick="anim{id}.reverse_animation()">
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<i class="fa fa-play fa-flip-horizontal"></i></button>
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<button title="Pause" aria-label="Pause" onclick="anim{id}.pause_animation()">
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<i class="fa fa-pause"></i></button>
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<button title="Play" aria-label="Play" onclick="anim{id}.play_animation()">
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<i class="fa fa-play"></i></button>
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<button title="Next frame" aria-label="Next frame" onclick="anim{id}.next_frame()">
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<i class="fa fa-step-forward"></i></button>
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<button title="Last frame" aria-label="Last frame" onclick="anim{id}.last_frame()">
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<i class="fa fa-fast-forward"></i></button>
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<button title="Increase speed" aria-label="Increase speed" onclick="anim{id}.faster()">
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<i class="fa fa-plus"></i></button>
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</div>
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<form title="Repetition mode" aria-label="Repetition mode" action="#n" name="_anim_loop_select{id}"
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class="anim-state">
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<input type="radio" name="state" value="once" id="_anim_radio1_{id}"
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{once_checked}>
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<label for="_anim_radio1_{id}">Once</label>
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<input type="radio" name="state" value="loop" id="_anim_radio2_{id}"
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{loop_checked}>
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<label for="_anim_radio2_{id}">Loop</label>
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<input type="radio" name="state" value="reflect" id="_anim_radio3_{id}"
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{reflect_checked}>
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<label for="_anim_radio3_{id}">Reflect</label>
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</form>
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</div>
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</div>
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<script language="javascript">
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/* Instantiate the Animation class. */
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/* The IDs given should match those used in the template above. */
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(function() {{
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var img_id = "_anim_img{id}";
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var slider_id = "_anim_slider{id}";
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var loop_select_id = "_anim_loop_select{id}";
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var frames = new Array({Nframes});
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{fill_frames}
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/* set a timeout to make sure all the above elements are created before
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the object is initialized. */
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setTimeout(function() {{
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anim{id} = new Animation(frames, img_id, slider_id, {interval},
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loop_select_id);
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}}, 0);
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}})()
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</script>
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""" # noqa: E501
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INCLUDED_FRAMES = """
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for (var i=0; i<{Nframes}; i++){{
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frames[i] = "{frame_dir}/frame" + ("0000000" + i).slice(-7) +
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".{frame_format}";
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}}
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"""
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